Question

Static Equilibrium Lab: Wheel and Axle

If you wanted to lift something heavy using this device, would you have the heavy object connected to the larger disc and then pull one the smaller disc, or vice-versa? Why? What would be the effect of using this device on the speed that the object lifts? That is, if you pulled your string at a speed of 10 cm/s, would the object lift 10 cm/s, or would it lift faster or slower?

Activity 4. Wheel & Axle eel & axle system is used in many machines-either to change the force required to accomplish a task or t change the speed in a system. A wheel & axle system is simply two discs on the same axis and connected so that they always spin together (i.e., with the same angular velocity (o). Traditionally the "axle" is just the smaller of the two discs and the "wheel" is the larger disc. Wrap a string a few times around the largest of the wheels on the wheel & axle system on your lab table. (It should look like 4 wheels of different sizes connected together.) Then wrap a string the other direction around the second smallest wheel. Your setup should like something like what is pictured below: Fiarge You will be attaching a spring small F. scale to each of these strings and then playing a bit of tug-of-war. That is, you will pull on one string and then see how hard you need to pull on the other string for the system to be in equilibrium (i.e., not start rotating). From your understanding of torque, do you think the two forces will be the same or will they be different? (And if different, which one will be bigger?) Explain your reasoning below before continuing ollo Now give it a try: Fsmall N , harge- Calculate the torques and compare: , 135 Nm ar Temalı = If you wanted to lift something heavy using this device,would you have the heavy object connected to the larger heavy using this device, would you have the heavy object connected to the larger dise and then pull one the smaller disc, or vice-versa? Why? What would be the effect of using this device on the speed that the object liftis? That is, if you pulled your string at a speed of 10 would it lift faster or slower? cm/s, would the object lift 10 cm/s, or

Answer 1

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